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240420-57-9

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240420-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 240420-57-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,0,4,2 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 240420-57:
(8*2)+(7*4)+(6*0)+(5*4)+(4*2)+(3*0)+(2*5)+(1*7)=89
89 % 10 = 9
So 240420-57-9 is a valid CAS Registry Number.

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